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The Centers for Disease Control and Prevention's latest school guidelines are running into complicated facts on the ground, especially when it comes to physical distancing and community spread.
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The updated guidelines make key changes to earlier language and include a new color-coded chart that divides school reopening options into four zones based on the level of community transmission.
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New research found that wearing a cloth mask over a medical mask significantly boosts protection against droplets that can transmit the virus. Knotting the ear loops of surgical masks also helps.
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A year into the COVID-19 crisis, Dr. Robert Redfield stands by his federal health agency's response to the pandemic despite an early "learning curve" and contradictory messaging from President Trump.
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Starting Jan. 26, airlines will only allow people to board if they provide documentation that they tested negative in the preceding three days or have recovered from the disease.
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In the U.S., front-line health care workers are likely first in line to get immunized with a COVID-19 vaccine. But what about the rest of us? Here's what we know so far.
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Dr. Rochelle Walensky is an infectious disease expert and teaches at Harvard Medical School. She will replace Robert Redfield, the current director of the Centers for Disease Control and Prevention.
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NPR analyzed data by SafeGraph to determine the percentage of people who stayed at their "home" location for Thanksgiving as well as the percentage who traveled 31 miles or more.
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In revised guidelines, the Centers for Disease Control and Prevention trimmed its recommended quarantine for possible exposure — from 14 days to seven or 10, depending on test results and symptoms.
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The discovery, uncovered after analyzing blood donations from nine states, strengthens evidence that the coronavirus was quietly spreading around the world before health officials were aware.